THE CORRELATION BETWEEN VOCABULARY MASTERY AND WRITING ABILITY OF THE FIFTH SEMESTER STUDENTS OF ENGLISH DEPARTMENT UNIVERSITAS RIAU

Abstract

Abstract: This research is aimed to find out whether there is a correlation
between vocabulary mastery and writing ability of the fifth semester students of English
Department Universitas Riau. The population is the fifth semester students of English
Department Universitas Riau. The sample was chosen by using cluster random
sampling and class A is used as the sample. Multiple choice test was used to know the
students' vocabulary mastery and a writing essay test was used to know the students
writing ability. The collected data were analyzed by using Pearson Product Moment
Correlation. The result of the correlation and coefficient was 0.574, it can be confirmed
that the two variables have a “Mediocre Correlation” based on the interpretation by
Sugiyono (2017). Therefore, the alternative hypothesis (H1) is accepted. In conclusion,
there was a positive correlation between vocabulary mastery and writing ability of the
fifth semester students of English Department Universitas Riau with mediocre level. The
obtained determination coefficient (R square) is 0.330 or 33%. This means that
vocabulary clarifies only 23% toward writing ability. While the rest 67% (100%-33%)
is probably due to other factors which are not involved in this research's variables.
Key Words: Correlation, Vocabulary Mastery, Writing Ability